I haven't found planetary approach to be a major problem tbh.
However, planetary departure and inter-system movement, yes, that's a bigger deal. Going from system jump-in to any planetary surface[1], is at most a 5 minute exercise. But to leave a planetary surface and head for another... that's a 10-15 minute exercise. It's almost better to just jump out to a system that's visible from the surface and back again, which is pretty naff. The main issue is for a good portion of your ascent, you're locked at 2500m/s, and you'll slowly creep up, 200km/s after breaking orbital cruise.
This can even be a problem when going orbital station->orbital station, but it's less of an issue, and is dependent on how close the station orbits the relevant body... regardless, your max speed starts at 200km/s, but can last up to a good minute depending on the size of the body.
This was always an issue, but became most apparent when Apex was introduced and people started doing inter-system travel more; this is why so many people complained about "Apex being slow"... it's not Apex, it's the whole aspect of inter-system travel. This isn't a problem with approaches; you're already over the "max" speed limit for that gravity well on your approach usually and can cover the distance easily enough.
Is it a problem necessarily? I don't know... it's slow, and there's nothing you can do but wait. For some things that's fine.... for this? I can grin and bear it with hard surface landings since I'm usually doing multiple things on that planet, but when at a space port, going to another port? It'd be nice if there was an option to depart via a mechanism that "fires" you into space, pushing you out at 200km/s or thereabouts.
[1] excluding ye old >100k ls bodies.