Having a "dirty" record isn't necessarily going to cause noise, just as having a visibly clean record isn't going to guarantee that the record is silent. I own a Nitty Gritty but I don't use it often. I'll look at the record, use a dry Discwasher to minimize the surface dust, clean the stylus and let her go. If the record is excessively noisy(and the majority of my 3000+ collection isn't) I'll give it a clean. Sometimes that works, sometimes it doesn't. Just depends. I don't shop in thrift stores, or hit garage sales. I typically buy from a couple stores locally or dealers that I trust. I'm not looking for the grand score. So pretty much all my used stuff is in great condition to begin with.
This is just my way. Not wrong or right. Those that like to do a cleaning before they play any record aren't wrong. I simply don't have the desire or time. And after over 45 years of spinning, it works for me.