Hey, do you have some facts to back-up your claims? Did you use E-Cycles at all? I have facts that show the contrary of what you says → E-Cycles producing more realistic and less artifacts than official builds:
Here, 2x faster to render, and correct render on top while Cycles stop it’s path much earlier, giving black blotches
There are also all the cases were the official denoiser gives blotches or has noise still visible, while the AI denoiser is clean.
When bugs are reported, bugs are fixed in E-Cycles and here the BF is not the best example regarding breaking changes with lightning https://developer.blender.org/T54486. 2.8 had broken Subdivision, unsupported instances, etc. for months and still has more than 1300 bugs opened like back in January, because also beta was called in November last year, they kept adding breaking changes until some weeks although “stable” release is meant to be done also in some weeks.
I’m ok with critic but then please bring true information backed up with facts. Did you already had a look to the E-Cycles ratings?