If it's one tool, it's not a problem. If it's every tool, it becomes a problem quickly. I had a tool that moved from 300/month to 2,000 a month just for SSO (for our needs.) Launchdarkly is just not usable due to the additional price for SSO.
It's absolutely a tax if it's the only feature you need.
It's absolutely a tax if it's the only feature you need.