I installed it and am using it to replace a much better addon that is no longer updated. I only care about two features: changing the case of titles and replacing thumbnails with video frames.

I have a couple problems with DeArrow:

Similar to SponsorBlock, the crowdsourced nature of it makes it very unreliable. There are many cases of overly opinionated user submissions that conflict with the original material in one way or another.

There are settings to remove the crowdsource functionality and make it work the way I described above, but getting it to do that wasn't very easy and required some hoops to be jumped through.

The much bigger set of hoops is the process of getting to use the addon. You cannot use the addon for free, and the description is misleading.

To get access you need to first click a button to decline paying, then you need to apply for free access, you do not get free access immediately, so you have to start your short free trial. My trial expired before I was granted free access. I was very tempted to uninstall the plugin at every step of this way, and the experience means I will never donate.

I understand the desire to make money off this, but this attitude sucks when it actively and very successfully disrupts the usability of the tool. I am not recommending it to other people. Will drop it if I ever make my own addon to replace the old clickbait remover, or find an alternative.

Maybe this is petty and vindictive, but I'm so tired of all the bullshit and lack of groovy attitudes.