Hawkeye wrote:

I had a commercial airliner pull onto the active runway as I was on
short final...the controllers quickly advised the errant pilot to hold
in place, they just pulled in front of a landing aircraft. I quickly
adjusted my approach to land well down the runway.

FWIW... Just another POV, please don't take it as personal critism of
what you did on the spot. G

I would NEVER land over another aircraft. I would side step and go
around. I wouldn't trust anyone who just committed an incursion into my
space to not run me over from behind.