For what it's worth: the reason it needs those tips is they are what helps it feel like writing on paper, but the tips can be put into third-party stylos - if you search Reddit or elsewhere you'll find plenty of people discussing alternatives.
The new marker requires charging. It is not compatible with the Remarkable 2 or other e-ink tablets like the Kindle Scribe. Look at the features on the store page, both the Marker and Marker+ talk about wireless charging.
Also, from their FAQ about the Marker:
Will other digital pens work on reMarkable Paper Pro? No. The new Markers have been custom-built for reMarkable Paper Pro’s Canvas Color display. Other digital pens, such as the Markers for reMarkable 2 or those developed by third parties, aren’t compatible with reMarkable Paper Pro. For more details, see our compatibility guide.
Gives me another reason I'll be happily sticking with my RM2 and not considering an upgrade, though not 100% sure which I'd choose if buying new now (probably still the older one).
They have introduced a new, proprietary stylus that requires charging. And it’s incompatible with any other device, including previous ReMarkables.