You are right… they would still go cheap.
Yep, they are "all in" on their philosophy ... pay their own, draft well and fill out the rest with cheap free agents. They have added pilfering the UFL for talent the last few years, so they've shown a willingness to adapt (wink, wink).
This year, they have let more players leave than in the past, but I believe they feel like they've built the roster to handle that. They don't need a Stephen Gilmore because they've hit on Diggs and Bland. They could let Tyron age out because they hit on Tyler and UDFA Bass (giving them some insurance if the first-round pick isn't ready). They could let Biadasz walk because there didn't appear to be a big difference between him and Hoffman, they knew the draft was deep in centers and they also again had Bass to compete for the spot (before getting Beebe). Pollard didn't play well enough as the starter to make them feel they couldn't replace him. Etc.
They went and got a middle linebacker that fits Zimmer's scheme and can lead it. And they seem to have shifted their philosophy to any back will do.