Good lord, the panic in that thread. General worries that Warframe will adopt the same lottery-box cash shop format that some PWE-owned IP practices, a comparison between PWE and EA of all corporations, the lack of research into PWE's track record (every IP it touches dies shortly it's taken over? sounds familiar...), overall begging from the Warframe masses to say it ain't so.
The assumption that everything you can buy flat-out in the game (never having played Warframe, I'll need you to fill in the blanks for me there) gets thrown into a lockbox you have a slim chance of acquiring is honestly a partial fallacy. That was one of the worries when Cryptic was taken over, and aside from the occasional controversial decision, STO's been flourishing, Neverwinter is still alive and well, and Champions is still going as strong as I remember it.
The worry about the game going P2W is admittedly legitimate, but I can tell you it's not as bad as I've seen it in other MMOs. Last November, Uncharted Waters Online changed hands from NetMarble (who actually had some awesome GMs, even if NM themselves didn't give Tecmo-Koei any feedback for improvement in the game) to OGPlanet. Even before the sale, the game had 'Treasure Boxes' that work like PWE's cash-shop boxes, only with much shittier odds, and the highest-value prizes were some very overpowered ships. I mean, 'low level requirements and can hold up against the players that've been in there since open beta' overpowered. OGPlanet took over, and yeah, the real-money prizes are still in there, but they also submit feedback to Tecmo-Koei on a regular basis, worked on balancing out PvP, planning out events more effectively, and without them we wouldn't have gotten the patches the game seriously needed.
My recommendation would be to let it play out. That way, if it turns out the way everyone's fearing, then torching and running would make sense. Doing it out of hearsay would be a bad move.