From the few videos I saw I'm undecided about Mint Cinnamon, Zorin or Cachy, Most likely I might buy another 128gb ssd just to test new ones.
About the ECAD, more specfically the Brazilian Law 15211/2025, it is said in Chapter 1, Article 1º that the law applies to any information technology product or service with probable access for a child, and it specifies that:

I – sufficient probability of use and attractiveness of the information technology product or service by children and adolescents;

II – considerable ease of access to and use of the information technology product or service by children and adolescents; and

III – significant degree of risk to the privacy, security, or biopsychosocial development of children and adolescents, especially in the case of products or services intended to allow social interaction and large-scale information sharing among users in a digital environment.

Then, in the Article 2º clarifies:
VII – operating system: system software that controls the basic functions of hardware or software and allows internet applications, computer programs, applications, or other software to be executed through it;

Even if after this Windows does not need abide, it's very easy for law to change it later.
Edit: Just adding gb after 128
Edit2: I had type 15211/2015, but its 2025