I noticed (no offence) that Catlover816 was actually getting kills, and on further observation it was clear as daylight that they were using autoclick - for example Cat was at least 20 blocks away from any enemy players and still clicking without stopping, at a constant rate.
After this I turned my screen recorder on but no other conclusive evidence was recorded - however I managed to get this out of Catlover:
After this I turned my screen recorder on but no other conclusive evidence was recorded - however I managed to get this out of Catlover: