How Modern video conference software can lack push2talk esp. during WFH

I find it pretty strange

For last like 12 years I've been using various VoIP software almost __every__ day to talk with people - 1 on 1 or in groups of made of 5/10/30 and so on

I've used Ventrilo, Mumble, TeamSpeak and nowadays Discord

but it always blows my mind that when I have to use Skype or MS Teams that they lack of this so __core__ feature

It is especially weird during WFH/Covid era where people are working with their families in the background because push-to-talk is basically great feature to allow you work comfortably while being on call with somebody without having to switch windows (alt tab) in order to mute yourself.

Gaming oriented voice software figured this probably like 18 years ago

Skype allows you to mute yourself, but doesn't let you change hotkey, so this is also weird because it's been already figured that e.g "MOUSE3" (Scroll) or other buttons on modern gaming mouses are way more effective to control talking because those particular hotkeys rarely make problems when using other software (web browser, IDE, games and so on)

So, why is that a thing? why would any voice software lack of this option?

Do people who create this kind of software never actually use it?

Or maybe there's other reason - they have never been in theirs 10's and had to use this kind of software to know, that enabling talking by voice is very bad when you're 12 years old sitting with friends on chat and then your parents enter your room :D