There's a big difference between a $100 Dynamic and $100 LDC USB...
With the USB mic, you have to build in the pre, the adc and then the mic...that's a lot of stuff, corners have to be cut.
The $100 SM58
has higher quality components and a better build quality than any $100 USB mic on the market. I'm sorry, but it's true.
That being said, we should stop acting like popular = good.
Popular = popular, that's all. This can easily turn into an art vs commercial debate but really, if we're amazed that a song can be a hit with zero gear, we have short memories.
The bigger question is what makes a record stand the test of time? Is Aja better written? Are the songs better? Are the performances better? Is the engineering better?
How about Desareli Gears? Kinda muddy sounding IMO, but that record stood the test of time.
How about Dark Side of the Moon? Certainly, all aspects of the record had extreme amounts of focus.
If you want to make music for a short term gain, more power to you, I'll stay my standard "snobby" self and try to make something worth listening to 6 months later.
That being said, music creation IS a democratic process, or at least it should be. This should give anyone with no money for gear some hope that with enough talent, they can break down the cost of entry and use budget-oriented equipment. The budget gear of today is far superior to that of 10-15 years ago and even then, if you look at records made then on budgets, some went on to have high levels of success.
I'm not trying to be discouraging but we should never say "well, so and so did it with just an SM57
and a Bluetube, so that's all I need." It's true, that is all you NEED, but you're going to spend a LOT more time fixing the problems that just one versatile mic on all sources is going to create, not to mention the lack of creativity that can stem from that new piece of gear.
If we don't strive to make the best-sounding results possible, what are we doing here discussing how to do it?