I don't think you're really misreading that (though I'll allow that, as-phrased here, it's a bit of an oversimplification). Nothing is always true.
But the overall point is that cheap condensers, while they can be seductive, often have some serious problems. While I love condensers on guitar cab (and in fact usually start with a U67), I'd tend to reach for a well-suited dynamic or ribbon on guitar amp over an inexpensive condenser, most times.
See, this is where it can get tricky-- what counts as a "good all around LDC." I run the risk of sounding snobby here, but this is very much a "no free lunch" scenario. Making a condenser mic at low cost that will pass signal is trivial. Tons of manufacturers can do it. But to make a good large capsule condenser is expensive and challenging.having a good all around LDC might be more useful overall than an SM57 which is less useful in my opinion.
If "good all-around LDC" is what's desired, this starts at U87 and 414-EB for me (perhaps 414-B-ULS if we're being a little generous). The Baby Bottle does not, for me, qualify (nor does any MXL I've heard).
If a user can't afford at least that, then they cannot afford "a good all-around LDC" (much like I can't afford "a piano as good as a Fazioli.") No free lunch. Harsh reality? Maybe. But good condenser microphones are expensive instruments.
A common scenario: I was recently given a pair of the latest "popular affordable condenser that's a great value" to review for a magazine. At first, I was like "hey, you know what? These things don't sound too bad!" And I used them for awhile, and used them and used them. It took about a month for me to become very annoyed by a few attributes, including a sneaky unpleasant off-axis coloration. Now they're strictly for "demo duty" only.
This happens over and over and over. I think it's why "cheap condenser du jour" always fades away, to be replaced by another while the time-worn 87s and 414s of the world just keep right on going.
Perhaps (or perhaps not!) but that's really another discussion. The OP wanted something to record his DRRI that cost $100. To me, given that application and price point, the SM57 is a no-brainer.I am only saying that if the budget is such, then there are "better" choices out there than the SM57 that can be made to do more for one than what the SM57 is really good for in my opinion.