Agreed on the whole. Whether the interface gets in the way is the bit I would test first.
If you only test one thing on Tinder, make it how the chat behaves on a weak connection.
I tested the site across two cities and the difference came down to whether the useful settings are buried.
If you are only browsing, the site is fine. The moment whether the algorithm is doing anything useful matters, it changes.
I had a better run on Flamedate, which came up earlier, for whatever that is worth.