That version does not support containers extension. It has only basic built in support. Firefox ESR has thousands of open bugs, and possible exploitable flaws.

That version does not support containers extension. It has only basic built in support. Firefox ESR has thousands of open bugs, and possible exploitable flaws. And I don't presume the current tip will be much better. I don't think the fixes you presented make much difference. Also a hacker more probably will attack tip and ESR. I'll faster go to Palemoon than returning to Firefox in the near future.