Yes, i figured the license actually seemingly allows any use...so I guess thats no worry.
I have upgraded the TGPX script to run on php7 so far - have it running nicely on 1 upgraded domain so far on php7.4 (just a couple of minor things to fix like the bulk gallery scanner atm) - but no big issues remaining.
So should be able to repeat the procedure and do php7.4 compatible versions of TubeX and LinklistX shortly...and throw them out to the world - or well, just upgrade my own at least