Given his political leanings, it probably shouldn't be surprising that Poilievre has chosen to oppose the Liberal tax changes. Back in 2004, the Conservative leader seems to have been in favour of eliminating capital gains taxes entirely (the Conservative party platform that year called for a "reduction").
It's a hell of a thing to imagine housing flippers won't have to pay any taxes on their profits.
Polievre - We've got a plan you guys! And it's better than thise damn Libs! And it's great and will definitely benefit everyone! Well...no we haven't published it. Well...no, you can't see it beforehand. We just need you to blindly vote us in and then we'll definitely not immediately stab you plebs, I mean middle class voters, in the back.