alt Hacker NewsYes, that is the price developers will have to pay. Development will be harder, but users are going to prefer somewhat broken sites over being outright refused entry.
At the end of the day user-preference is what dictates which browser is used and how it is configured. Developers will have to deal with what users choose to do on their end.
You can only patronize people for so long before they look for a way around silly restrictions. Trying to keep someone safe by putting up walls, whether the threat is real or imaginary, is pointless when it is in the user's power to trivially defeat those walls - and when extension and browser developers are going to line up to sell them demolition tools (see ad blocking).
Advice is going to go much further than roadblocks, long term.
We used to deal with what browsers users chose on their end, then came IE market dominance.
After the lawsuit against Microsoft, and the raise of Firefox, Safari and Chrome we had it all good again.
Then devs had to get comfy with Google offerings, including shipping Chrome packaged with their pseudo native applications.