The problem is that people go out and buy the cheapest lights they can find off Aliexpress and then wonder why they're getting blue-tinted flickering. I must admit I was surprised by these ones given how much junk is out there, but they've got good-quality diffusers to get an even colour spectrum and don't flicker at all. They've also got a massive heatsink that's bigger than the entire rest of the luminaire, good-quality electronics... and a price to match.
Another problem with many cheap LED lights is that you're getting the raw LED output, or close to it, so they can be advertised as 6.023e23 lumens rather than sacrificing a small amount of output to get better-quality lighting. And then throw in some Gluxon capacitors... and the metal cap on the end is fine for a heatsink, right?