

It’s rather sad when such extensions don’t refer to their source code in descriptions.
Meanwhile, Google Chrome extensions are to be updated automatically.
Sorry, I won’t install it, since I have no trust in the source of it, and I care about my time to not re-check it on every update.

I am sorry, but I am not sure what tells you how Bash “was designed” or not. Perhaps you haven’t yet written anything serious in Bash…
Have you checked out Bash PitFalls at Wooledge, at least?
Bash, or the most shells, including Posix, or even Perl, are some of the most complex languages out there to make a mistake… since there’s no compiler to protect you from, and though legendary but readline may cause the whole terminal go flying, depending on the terminal/terminfo in process…
No, sorry. I absolutely disagree on your stance regarding “shell” for a “bugless” “huge deal” in “real cases”.