Mine is that the useState hook is an actual plague on the entire React ecosystem. Regardless of your opinions of React, if you wanna use something then use it right.
Google has done more for web standards than the open source community ever could
Google was a great company when they were an upstart that needed to create standards so they could compete with the likes of Microsoft and Apple. They pushed for standards, adopted them, and promoted others to do the same.
Today, they have weaponized standards to entrench their monopolistic positions. They pushed so many standards in CSS, Javascript, and other technologies that it's impossible for a competing browser to emerge outside of Chrome, which they own, and Firefox, which... they also own in any way that matters. And they also leveraged their search monopoly to favor websites that adopted the standards they were trying to push in order to force the web to adopt the standards they wrote, and therefore, their own browser.
They helped create the open web. Then they claimed it as their own.
It's a great example of how a group starts out being your friend, but then amasses all the power for itself and gets corrupted by it. They have not been our friends for over a decade now, and we can all see how bad it gets.