@rushidimber,  @ Polymath-Maniac, Thank you.
@Quiper, the user you mention is just one of 30 who were eliminated yesterday, with over 2,500 models in total.
The problem of sellers who sell models that are not theirs is one of the problems that we suffer daily. Especially serious is the case of repeat offenders, who appear again and again and that CGT has said several times, that it is not able to control effectively, because cheaters change email and IP in 5 minutes, such as the user who I start this message and it is also a minor and has not yet been deleted.
The proposed solution would solve this problem and is simple to implement, you just have to change the order in which the steps of the current vendor registration system are performed. But it should not only apply to sellers, but also to buyers and other users, thereby also solving the problem of spam in the forum, fraudulent purchases ... The current system, according to the terms and conditions, allows you to make purchases without an account and the agreement ends and becomes effective at the end of the sale. If the buyer were properly identified BEFORE making purchases, much of the fraud in purchases would be avoided, because it is relatively easy to get hold of the card details, but it is more difficult for the thief to have a copy of the identification documentation of the holder of the card.
The guest user figure should be for users who do not want to provide their data, and will not function as a seller or buyer. These invited users would have restricted operations, to activities in which personal data is not necessary, such as reading the forum but not publishing, which would avoid most of the spam that floods the forum. It is much more efficient to put the solution before the problem occurs, than to have to continually delete messages and users.
CGT is a market for 3D models, and the majority of users who register do so with the intention of buying or selling (either models or projects) and therefore their data will be necessary sooner or later. Why asking for them before is going to be against your privacy, but not later? It's ridiculous. The data will be the same that is requested now when the payment agreement is formalized, but with the proposed change, only the moment in which it is provided changes. Then, if the proposal were illegal as it says, so would the current procedure.
Requesting the personal data necessary to formalize the contract that supports this commercial activity is completely lawful and necessary, (in fact, it is being done but not at the right time). This requirement must be made when the contract is formalized, because CGT must have available the seller's data, for legal reasons, not only for tax purposes, even if he has not sold anything and even if he never does, or if he has made sales but has not yet collected the royalties.
Imagine the possible case, in which a court injunction is received against a seller, for a copyright claim. With the current user registration system, you would not be able to provide the information required by the judge at the request of the copyright owner, if the infringer has not completed the payment agreement. That would prevent the rightful owner from exercising their rights, specifically point 2 of article 77 of the copyright and related rights law and you would be looking for a problem because you could not comply with the judicial requirement.
Clearly, economic and marketing goals are prioritized in business decision-making over the safety and well-being of the authors. It is significant that in CGT's responses, the needs of your company and your customers are mentioned, but the rights of authors are not mentioned (and there are many authors and we are also an essential part of the equation). It is logical that the authors worry about defending our rights, since it seems that nobody else does it and also the law is on our side. I may not be aware of business decisions, but I am aware of the law. He seems not to want to realize the seriousness of the problem and the responsibility he has as an intermediary, for his acts and omissions (point 3 of the same article mentioned).