That's what I do too - if it's a meeting I care about, I make the effort to suggest a different time. Otherwise, just decline. My calendar is visible and up to date, use the fucking scheduling assistant to tell you when I have time ffs.

I was a lowly bottom tier asshole at the time (doing senior work, just didn't get the title) so managers would just put shit on my calendar and assume i would clear everything for their pet project. Then they got upset with me when that didn't happen.