[uallo]

In real life, developers use https://caniuse.com which tells you exactly what features are supported in what version and when that was released.

[Groxx]

yea. you support features / ages / percentages, not version numbers. whether there are 2 or 20 doesn't really matter.

[afiori]

A moment where version numbers are relevant is when you collect telemetry from your users and when you reccomend supported browsers.

I think it is in part a difference between websites oriented to the public and websites oriented to companies, where browser versions can be more complex than a self-updating browser.

[Groxx]

Sorta. Though in that case, more versions is more better - it gives you more precision on the up-to-date-ness of the browsers people are using. Rather than saying "80% of people use a browser from between 2016 and 2018", you can say "75% use one from late 2018".