The UT196 they at least splurged on MOV's and four pair of bigger SOT-89 clamp transistors. But the spacings for R1 2MEG are hilarious if you follow the pcb trace.
We don't know if it's actually 61010 certified, Uni-T removed their certificates from their website after it revealed their dodgy practices. It's common practice to deceive and say "designed to" or "follows" 61010 but nobody ever tested it. Provide the certificate and file number if the multimeter has passed regulatory.
It's very difficult to find a PTC rated for 1,000V and UL approved. Putting two in series does not work because they have unequal resistance and heating times.