That is not true at all.

Epos “still” has great mics on the h6 pro.

Corsair has very good mics on the premium headset (virtuoso), and the wired hs80.

Razer also has a very good mic on the blackshark v2 pro 2023 (not the old one).

Hyperx has a very good mic on their wired cloud 3.

Drop x Sennheiser has a good mic on the pc38x.

Beyerdynamic has a very good mic on their mx300 gen2

Audio Technica has be best ever mic on a headset currently on the m50xsts (or other with the same mic, not sure if they have other similar ones).

And all of these mic sound better than what modmic has currently not discontinued.