i don’t think there is single mikrotik that can’t function as a router. the fact you can configure them as software bridge does not change that.

the rest answered here:

there are some but they are definitely in the minority. also this regulation is focused on home and soho devices, it specifically mentiones tp-link, which is really not enterprise brand.

also the regulation from what i found is so vague, that i suspect that for the author router equals to “that white box with antenna sitting on my table” and is very likely they have no clue about difference between l2 and l3 layer and what router actually is.