I'm surprised to see it suddenly in wide use here, honestly. I've been 'in the linux community' for 25 years or so and only started seeing people use it in this context in the last month. Jarring isn't the right word but it seems sudden to me knowing the connotations from the mid-to-late 90s car culture.
"sir, that flight was yesterday"
Beyond support agreements that others are mentioning, the huge requirement for the shop I work at (mid-scale high performance computing center) it’s 3rd party vendor package support. Mellanox/nvidia, whamcloud, slurm, vast, and on and on. Driver packages targeting rhel kernels are an industry standard offering if a vendor supports linux. That’s not always the case with Debian variants, for instance.
Same with huge applications and proprietary compiler suites (think matlab and the intel compiler suite or OneAPI). These are hugely important packages for a number of shops.
Don’t get me wrong, I can build against plenty of other distros but my vendors target rhel as a first class citizen for both build scripts and straight binary packaging.
That is the absolute least-surprising explanation.
Tarballs, the finest packaging solution ever conceived.
If you’ve ever emulated switch on a modern machine with buttery smooth 1440 or 4K, you know the answer.