Shouting out closed source things I hate

Xfinity/comcast makes their website slow on purpose to make old people think they have to upgrade their internet speed. It also wants KYC for no reason at all except to sell your data.

Can't do anything about it because they have a monopoly.

Microsoft Windows :)

@Kodomu Beat me to it.
In order of seething rage:

1. Google Chrome: duh.
2. Nvidia Linux drivers: Constantly break, switched to AMD/Radeon and never had another issue.
3. iOS: For tricking normies into the illusion of security.
4. Microsoft SQL Server: literal garbage fire, had to deal with one recently.
5. Telegram: See #3
6. Every over-the-counter router/Access Point ever made: I hope you like CVEs.