If that turns out to be true, all the NaySayers who shouted Never Never Never are going to look pretty dumb.
Give your head a shake, man - which posts are you referring to? All I can see is comments about TCX already selling flights in 2020 so asking for confirmation/sources.
During the winter there is a fair amount of duplication between routes, and a/c spend time sitting doing nothing, so if TCX can make better use elsewhere it makes sense to buy seats on other operators.