"I can’t open this website I always use to make a reservation to volunteer."
Regressions are regressions. You don't get to make excuses if you unilaterally changed something for someone.
Regressions are regressions. You don't get to make excuses if you unilaterally changed something for someone.
This is a common thing when working on library-like-things outside the web too. Widely used C++ libraries generally aren't taking hard dependencies on C++20 features right now without continuing to support e.g. C++11/14/17.
Don't you think the customer experience is strictly more important than the developer experience?
The developer is putting in the hard yards to make the website for their community event. Why shouldn't the user make the effort to have a web browser that's updated to 2022?
It's a complex conversation, but "the customer is always right" is not always the case.
The developers do have access to statistic about exactly how many clients they'll break. They might have felt that it's so few that the ease of development justifed breaking the website for just a few users. They could tell them that their browser is too old, saving many a lot of headache.
In this case, the problem, making a reservation to volunteer, is simple enough that you could have solved it with a CGI script in 2001, and it would still work. So it only broken, because someone felt it needed to be more modern. Remember, this is people who volunteer their time, they're not forced to do anything, so you have to be as accommodating as possible.
Optional chaining however is missing for something like 8% of users https://caniuse.com/?search=optional%20chaining so for this specific situation I'd say that's probably a bit too high to not transpile/have a fallback for most anything but a tech demo.
In fact, browsers that are more than X months old should automatically pop up a warning telling the user that it hasn't been updated recently and they're running a security risk by continuing to use it, including/especially on these old EOL devices. Browsers that have reached this point shouldn't be expected to be supported by websites.