They start out by describing all the work that has been done by other people to make open source synthesis possible.

Then they say they've added some well known, industry standard optimizations to the existing open source tools. In addition, they made use of the abc tool in a way that maybe wasn't being done much before.

My view is that if you think someone taking your software, changing some parts, and releasing it under a different name (while still giving you credit in an about section) leaves a bad taste in your mouth, don't release your software with a permissive license. You are explicitly giving permission for someone to do this.

I don't like companies doing this, so I tend to release under GPL. Even then, I'm happy for someone to rebrand and sell it, as long as the source is still shared. I gave them permission to do that.

Don't give someone permission to do something, and then say it's in bad taste when they do that thing.