I have no problem with anyone who wants to ue conventional lubes but PC is certainly NOT time consuming compared to lube sizing...maybe a very expensive Star being as fast. If it's slow for anyone, they just have not gotten the process down pat. I cook around 300 9mm's per batch for 20 minutes. In that 20 minutes I can tumble and stand on parchment, the next batch. I've had 450's and LAM II's (never a star) and I could never get 300 in 20 minutes. Especially a bevel base.
What happens when you drop a tumble lubed round on the dirty ground at the range? PC is no worse for wear.
I will say, tumble lube is pretty fast but I despise the mess and unless it's thinned properly (as you mention) it smokes like a tar kiln.
To each his own but I can devote a cold winter sunday to doing PC and I can coat several thousand without really putting in hard work.
I keep a lube sizer around thinking I may want to try it again someday.....That reminds me, I should probably spray it with something to keep it from rusting.