Do they though? You buy a license for a piece of software, and as far as I understand that doesn't include any fundamental rights involving insight into company policies, direction, business strategy, ...
Regardless, this is of course quite a dubious takeover.
Users absolutely have a right to know that the same software they bought is now being packaged by someone else. We're not talking about a different license or version 6 or whatever. Same software, different owner over night.
BTW for people looking, https://www.macbartender.com/Bartender5/release_notes/ still has the old versions up, 5.0.49 is still signed by Surtees Studios Limited
Also, this doesn't seem to be true anymore, the new owners did outline some future plans:
> [...] We've collaborated closely with Ben to understand his vision for Bartender. Our goal is to implement many of the improvements he had planned and address any reported bugs from the past few months to enhance Bartender's performance. [...]
https://old.reddit.com/r/macapps/comments/1d7zjv8/comment/l7...