As long as you are aware you own a trash psu, then that is fine. You do have to buy what you can afford, and spending $400 on a miner and being cheap on a power supply is hands down dumb. If you are too broke to spend the extra $20 on a better psu then you are doing it wrong.
Spending $400 on an Ant and $200 on a PSU does not make sense for a small scale miner. The CX or whatever it is you're so unhappy about works fine with a single Ant and that's all there is to it. Not everyone wants or needs 100A on a single rail. Smaller PSU at peak efficiency is better than underutilized large one. I started with cheap-after-rebate PSUs and it was the best decision I could make back then. Dual PSUs for GPU rigs when everyone was buying LEPAs at ungodly prices, and I could afford spares too. Somebody doing something different than you is not "doing it wrong".