Because it’s hit or miss.

My death adder, black widow, and Stealth are great. Nearly two years of daily heavy use, not a problem.

My core, mixed bag. On one hand Razer was super scummy jerking is around with the USB issue, making the USB ports effectively useless, but other than that it does the job of being an external GPU nicely though honestly I would not reccomend it as a proper gaming solution until the price comes down or Thunderbolt 4 is released.

My wireless naga, piece of trash to the point I almost actually took the damn thing to their HQ to smash it on their door in SF.

Sometimes their products are great, for the other times Corsair and Logitech offer similar stuff. I do like Razer products because they don’t look obnoxious. The RGB effects can be dialed back and besides the logo, it looks like your typical business equipment.