Or another process will die at random instead, which might be your desktop environment, the main browser process, Signal (10% chance at corrupting message history each time), a large image you were working on in Gimp...

Firefox has gotten very good at safely handling allocation failures, so instead of crashing it keeps your memory snugly at 100% full and renders your system entirely unusable until the kernel figures out (2-20 minutes later) that it really cannot allocate a single kilobyte anymore and it decides to run the OOM killer

but also

it's not cheap? Why should everyone upgrade to 32GB RAM to multitask when all the text, images, and data structures in open programs take only a few megabytes each? How can you not get hung up about the senseless exploding memory usage

I dunno I have 96GB of RAM and I still get the whole "system dies due to resource exhaustion" thing. Yesterday I managed to somehow crash DWM from handle exhaustion. Man, people really waste resources....

That's not how it works. Process killing is one of the last ways memory is recovered. Chrome starts donating memory back well before that happens. Try compiling something and see how ram usage in chrome changes when you do that. Most of your tabs will be discarded.