I personally think its disgusting that this woman has been given celebrity status and air time
Well, she already had celebrity status in certain circles. After all, Trump knows all the best people doesn't he?
for an alleged act she was a willing participant in at the time,
The alleged act nor that she was a willing participant is the issue.
which was then 'leaked' to media years later BEFORE he became President when there wasn't much interest,
Not really "leaked" to media - Daniels did an interview with In Touch Weekly, which wasn't published at the time as Trump had threatened to sue. Shortly afterwards Daniels claims she was threatened in a public place.
accepted a payoff
Interesting that the $130,000 NDA payment was made in October 2016, just before the presidential elections? Almost like someone had something to hide?
then put it back in the public arena by suing him (who needs to sue to not be bound by an invalid document anyway?)
Well she played along to begin with, by denying everything, and was in turn threatened by Cohen. If the NDA is invalid, why the threats? Damn right to sue back.