inotify watch failure

[w4kh]

When up dating/upgrading chrome and teamviewer, I twice got the message:

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Failed to add /run/systemd/ask-password to directory watch: inotify watch limit reached

In the past, I have ignored that warning, but today I wanted to track it down and find out what is actually causing it, what package is "offended", and what potential danger there is to ignoring such a failure warning.
Searching the forums, I found "Best value for max_user_watches" with these two links:

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https://wiki.archlinux.org/index.php/ReadyMedia#Automatic_Media_DB_Update

and

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https://wiki.archlinux.org/index.php/ReadyMedia#Automatic_Media_DB_Update

Apparently I have never added "inotify-tools" to my system, so the related man pages from the bottom of the inotify man page yield no results.
After some study, it appeared that the "solution" offered in the first of the two links might work, so I tried:

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/etc/sysctl.d# sysctl fs.inotify.max_user_watches=65535
fs.inotify.max_user_watches = 65535

and

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cat fs.inotify.max_user_watches=65535 >> /etc/sysctl.d/90-inotify.conf

So, my question holds:
What is actually causing this failure? system? package?
Exactly what package is "offended"?
And, MOST important, what potential danger there is to ignoring such a failure warning?