A website like this is not required. It's just nice to have. Somehow we've managed to use email without this website it for the decades that email has supported HTML.
Caniuse exists too, does that mean HTML and CSS are broken? Nah, it's just a useful resource to help people decide what tradeoffs to make.
Caniuse exists too, does that mean HTML and CSS are broken? Nah, it's just a useful resource to help people decide what tradeoffs to make.