Thats literally happened to me on mac and windows both

Both products have flaws I dont like, so im ok with either stance tbh.

Is Linux perfect? No

Is windows better than linux? No

Is mac better than windows? No

Are your specific issues a reason normal users shouldnt use Linux? No

Interesting breakdown, thank you.

Do you happen to know if the containerization is similar to docker containers? Or more like android apps?

While true, in most cases the username is simply “git” and not a specific username tied to the pub/priv keypair

When authenticating with git over SSH, the private key should be considered secret and well protected.

That means the corresponding public key that was uploaded to the git server is enough to authenticate and no username is required. However, a password protected privare key is possible and extra layers of security can be added to the authentication mechanism.

As far as resource based attacks based on public key searching, I doubt many servers have significant enough public keys on a single host to even notice. Most repos are siloed and have specific teams/individuals assigned to them, so only a small number of public keys even gets loaded.

I dont know enough about the server side mechanics to be sure, but imo the attack surface is pretty small.