Chromium browsers have a lot of issues, and so does firefox, but ram usage is not one of chromes weaknesses, Chromium regularly preforms better for me then firefox does under low ram scenarios, Both in terms of chrome being responsive, and in terms of chrome not crippling everything else around it.
This is correct. Ive helped a bunch of people (in Linux) complaining that chrome was eating all their ram when in fact it wasn't. Memory management is hard and it's easy to look at the wrong indicators.
It does love its ram but not as much as people think.