I do that as well. The full setup is Firefox with Strict protection, Multi-Account containers, Temporary Containers, Privacy Settings, Decentraleyes, and uBO. What's unfortunate is I start getting sites that don't like this treatment at all. IKEA straight-up tells me that I'm probably a bot so it won't let me log in, but other sites have random broken functionality as well.
If you’d like to, feel free to reach out to me on robin.whittleton@ingka.ikea.com so that we can try to fix that IKEA behaviour. Or file an issue on webcompat.com and I’ll track it from there.