Yes, I would agree, I am more likely to notice problems with the default browser simply because it is used more. Other browsers could be exhibiting the same (or even worse) problems! However, I am not comparing Chrome with other browsers. My main comparison is really with how Chrome used to be.
What do you do that requires so much memory?
Well, nothing special really! I currently have about 40 tabs open across 2 windows. And I'm hitting 4.5GB in task manager. That might sound a lot of tabs (or maybe it doesn't?), but I find I can easily get up to that throughout the day. I used to operate with 100+ tabs in Firefox (which used to be my default browser years ago) - when the tabs would be restored at the start of each session - and I never had a problem with that - although it took a while to startup initially!
It should be noted, that if I leave the machine running for several days (very common) then memory usage will creep up and up.
A lot more crashes and tabs that need to be reloaded.
Yes! This happens quite frequently after the recent update(s). Even opening a new tab I can get the "snap" screen and must hit [Reload].