Obviously I can only speak for myself as a non-impaired person, but I am often in spaces where I cannot listen to audio even on headphones. Also a summary is nice to get a feel if I even want to spend the time watching the video later.

You can set the volume by tab and not only globally for the browser. It’s also very useful if a website doesn’t have volume controls. And if the audio is too quiet, you can amplify it (as the name says) to up to 600%.

Try a Reddit mirror like RedLib, i.e. https://redlib.privacyredirect.com/

TLDR: Avoid Telegram and WhatsApp. Recommended messengers are Session, Signal, SimpleX and Threema. Honorable mention: Briar.