Ah yes, after giving the middle finger to the entire open source community after you bought Audacity - only after screwing over the original userbase of MuseScore. Tantacrul is a black mark on the FOSS community. Strong words, yes.
Also, they didn't really screw over the user base of Musescore. Musescore still works great and they are providing an amazing product for free. Even though pure open source might not be their focus, I have a hard time condemning them for providing great, free products.
(I'm not affiliated with Musescore or their company. I'm just a happy user of both Audacity and Musescore, both of which are the only truly competitive free products in their respective domains.)