My only issue with them - I've not tried them - is that they are single driver buds. I recommend/suggest triple (3) or more drivers for bass. You get better audio separation and less ear fatigue with more drivers. You can also adjust specific frequency ranges without impacting the others. For example, you can boost/cut bass without impacting the other ranges. That's tougher with a single driver as it's reproducing the entire spectrum.
As we’ve often discussed before, it’s not that simple

The Linsoul earbuds that @PatTheDog is referring to use
dynamic drivers (ie what we think of when we think of a ‘speaker’, with magnets, a voice coil, cone etc), which are capable of efficiently reproducing a wide frequency range, NOT
balanced armature (BA) drivers, which are only capable of efficiently reproducing a much more limited frequency range. Generally speaking, the greater the number of BAs, the fewer compromises need to be made in frequency response, with lower driver counts missing out on representing some parts of the audio spectrum.
Earbuds using BAs need more drivers in order to cover a wide frequency range (it is not for audio separation or for ear fatigue, though the audio clarity a good pair provides would help with both of these). On the other hand, a suitably designed dynamic driver earbud could happily cover all the frequencies that you might want in an IEM - just like you may find (for example) single driver bookshelf speakers or monitors of excellent audio fidelity (usually for a price).
This is not to say that any particular single dynamic earbud isn’t going to be overpriced rubbish (Shure se215, I’m looking at you), and I have no idea whether the Linsoul one does or not as I have no experience with it, but it is not inherently limited just because it has a single driver.
Regarding the ability to adjust certain frequencies without impacting others - I would love to see some citations for that, as I really don’t see how that works given that you don’t have access to adjust the crossover in the earbuds. Both dynamics and BAs just work with whatever signal is coming in and do their best to reproduce it. I have never heard anyone say that a typical 10” driver has any trouble with frequencies being cut or boosted affecting other parts of the audio spectrum in a way that doesn’t track with what’s going on in whatever EQ device is being used.