I have been using this for a little more than a week. On the plus side, I very much like the convenience of blocking titles/channels directly via the context menu, combined with the power of regex filters for getting rid of those pests that can be matched by a pattern and would otherwise keep cropping up like stubborn weeds; and finally some other very useful features such as blocking those intolerable shorts, and settings import/export capability. The downside, and reason for me not rating 5 stars, are the fact that some previously blocked titles still seem to slip through occasionally, and that updated filters do not get applied to the feed page without a reload - Channel Blocker (the only other extension that comes close IMO, but lacking several of the nice features of this one) manages to do that, so it certainly is possible.