Or to look at that from another angle, if you were to define a Trait which has generic methods that Trait won't be "dyn-compatible" meaning that you can't do dynamic dispatch with this trait, which may be irrelevant to you (if you don't want dynamic dispatch anyway) or a showstopper (if you needed it, now your project won't compile).

That is another way of looking at it, but given the topic, you're gonna have to expand or contextualise that. I Rust a fair bit, and only barely follow.