This guy has done some pretty compelling videos on how pull-through sharpeners are far worse than traditional sharpening for the edge of a blade:
The TL;DW version is that by pulling parallel with the cutting edge, the blade gets roughly scored in a way that both weakens the apex and chips the edge. It will be sharp immediately, but will dull very quickly as the ragged wire edge folds over.
In other words, it works better than no sharpening for a home cook, but requires more sharpening and will wear the blade much faster.
For me, I'm an occasional cook who does appreciate a truly sharp knife (which can also be safer, counter-intuitively, because cutting requires less force), but can't really be arsed to spend the money and mess around with a selection of stones and strops. I'm also not confident enough in the freehand approach that can easily ruin an edge if you get it wrong. Right now I'm looking at a Lansky-style sharpener that clamps to a counter edge and sets the angle for you as a low-skill compromise. The jury is out on the rolling sharpeners with the ads that are all over my Instagram feed, apparently they work but also wear out faster than they should, especially considering the cost.
As for knives, we have a basic Henckel set that work well enough, and I also have a fake Damascus chef's knife from Ikea that cuts far better than it has any right to. Having watched far too much cooking YouTube, I'm also looking at picking up a mid-range Japanese nakiri knife for veggie prep, as that's probably 90% of my needs in the kitchen...