Yep, and last time the debt ceiling vote came up, people on the left were imploring Democrats to raise it by a stupid amount / abolish it so they wouldn't need to go through this stupid fight again, but that was dismissed because it was 'unrealistic' or whatever.
And now Republicans are doing exactly that. After they've proven that a small caucus can take down / get concessions from the speaker of the house. Another thing some Democrats were unwilling to do.
The debt ceiling has always been used by Republicans to pressure Democrats into further concessions that would otherwise not have been needed to give. Remember, the debt ceiling is just an extra hurdle towards spending money that was already appropriated by Congress. So Congress as a whole voted to spend all that money and thus a certain amount of debt. The CBO can calculate exactly how much something will cost, so if you're worried about what tax cuts/spending would do to the debt, you can always find out. There's no need to have an additional thing on top of that that can randomly shut down the government.