This is interesting; I wonder if the loosening of green passes, etc., across Europe will result in fewer easy testing locations. In December in Rome, there were several within a few blocks of our hotel and we didn't have to stress about finding a test at all, but I imagine that's already changing.
For my next trip in the summer, I'm actually flying in and out of Vancouver and then driving back over the land border to the US (not to avoid the testing requirement if still in place, but a combination of flight prices and where my dog sitter lives). It's interesting to me that Canada doesn't require an entry test but does require masking on planes. I guess we won't know which strategy is more effective in the long-term for some time.