Developing for every platform has unique properties. Every platform has its own native UI toolkits and look-and-feel; try to release an Electron app, and people complain. Write a great iOS app, but no iPad port, or be a couple months late with support for The Notch, people complain.
Linux's main difference is that, with so few users, when their priorities are disrespected by Big Corporate, the populace sides with Big Corporate. Rather ironic; most of the priorities Linux users have are motivated by respecting the user's privacy, security, and freedom. It seems likely to me that its a thought process similar to why much of the downtrodden American middle-class sides with Republicans, despite rarely having their best interests in mind.
I use 1Password, and it's fine. But these complaints are legitimate. This is a closed-source security facing application from a company that has raised at-least $200,000,000, which at one time charged a large amount of up-front money ($60+) for their product, used dark patterns to drive customers to their subscription-based closed-source cloud product, then left the original users in the dust. AgileBits should have no-ones good will, and even as a 1Password user, I support anyone who uses this forum to discuss their move to alternatives.