The Freedom Caucus essentially wants to control government from a base of 40 members of the House, with only a few allies in the Senate and no president willing to agree to their demands. They want to defund Planned Parenthood, balance the budget through massive spending cuts, dismantle government healthcare programs, and overturn every executive order of the past eight years, regardless of not having the two-thirds support in Congress that would be required currently to override Obama vetoes and make that happen.
Consider that Ryan is the architect of perhaps the most sweeping conservative budget in history, one that would balance the budget in a decade, mostly by pulling the safety net out from low-income Americans. In the past, he has proposed ending Medicare as we know it, cutting Social Security benefits and simultaneously cutting taxes on the wealthy, necessitating even more budget trims. And now this guy is a big-spending liberal!