[SOLVED] slackpkg 15.0 wants to update, remove and install a huge number of packages

I just updated to slackpkg 15.0. As suggested in the thread named slackpkg 15.0 I disabled slackpkg+ which I was using previously to get the new blacklisting syntax working. Then I blacklisted all the SBO alien and multilib packages and run slackpkg update. If I now run slackpkg upgrade-all it wants to update hundreds of packages. Also if I run slackpkg install-new or clean-system a huge number of packages show up. So should I update to these packages or not? I'm quite confused by all of that.