Neither of those terms seem problematic to me; a plain reading would be “mostly” means more than half of the code, and “tolerated” would mean that the ban is not enforced on such projects. Of course, if you are already operating under the assumption that Codeberg is acting in bad faith, then it doesn’t matter what the terms of service says nor how they they might say that they interpret them.

It is, however, not surprising that their terms of service are subject to interpretation. That was already the case before they added these particular terms. For example, the Codeberg TOS already included a prohibition against “content that harms the reputation of Codeberg” before the recent changes. Codeberg simply added projects related to cryptocurrency as an example, when the ban was voted through. It is furthermore the case that most, if not all, terms of service are subject to interpretation. We are talking about documents describing human behavior, not machine code.

If this kind of thing is not acceptable to you, then your only real solution is to self-host