The more "protection" is placed trying to stop piracy, the more you annoy PAYING customers.
That is an old argument, and I understand it because I used to claim it too. However, Python scripts was already a dead market for years when I came in, and according to one of its veteran vendors, it was due to piracy. So your argument is from the customer side, and the result was the extinction of an entire market because it wasn't big enough to survive piracy.
Like with most new features, there were kinks in the beginning, but those have been fixed, and I haven't heard of people having issues with it for a while now. The last couple were due to people forgetting their password, or because the embedded store credentials don't require entering your entire email address, but just the user name. It had nothing to do with false positives. There were none so far, and I would know because those are reported directly to me, and I am the only scripts vendor still active in the market. Everybody else gave up on this market because, according to PhilC, it was no longer viable due to piracy.
Therefore, selling unprotected scripts would be like doing the same thing all over again, while expecting different results. And you are right - anything can be hacked, but if you have a better idea to keep this viable to vendors, I am sure Rendo would love to hear it.
One way to handle this would be like Reallusion has been doing since iClone 7 came out - encrypt all contents, and they can only be decrypted when installing directly from the embedded store, or Reallusion's proprietary online installer, where neither methods involve downloading ZIPs. However, this only works for Reallusion because they own all program platforms they sell contents for, which is not the case with Rendo. They only own Poser, which is currently just a tiny portion of their customer base.
An even simpler solution would be for Rendo to only allow product installation directly from the embedded store, but that would exclude everybody still using Poser 11 or older. And since Poser contents are not encrypted, as soon as they are installed, they become vulnerable to piracy. Hence call home DRM is the only thing I could think of that would work in this scenario, and mind you, it is only used with Python scripts - and as an attempt to bring this market section back to life. So if you know of a better solution, let's hear it.