Jeez, people read into stuff don’t they.
The dealer isn’t reluctant to MOT it. He’s reluctant to before sale…this is standard practice. They only MOT after sale so it’s not sat on the forecourt ticking down the MOT for a month or two before someone comes along to buy it. It’s not the dealers fault the seller NEEDs the car that day.
Why haven’t you raised this previously if you’ve been teeing it up for days? You should have been doing your homework on MOT history, CarVertical/HPI etc.
Given your need to drive the car away, I don’t think you’ll get much off it (maybe the MOT cost).