It’s an alternative, but provides no new functionality. The truth is while owned by Meta, Mapillary has the best street imagery coverage of all three street view platforms. I provided millions of images for all platform so far, but here’s some feedback.
If I had to rank them:

1. Mapillary integration with iD and JOSM and has the most configuration options and most active community. I dislike supporting any Meta platform, but for OSM’s sake I think this platform works the best.
2. KartaView, which also has nice integration with iD and JOSM, but the community is smaller and the coverage is not as thorough.
3. Mapilio is the latest, but for now I don’t see any new features and we are yet to see how this platform develops and how adoption works.

Fortunately all three platforms are integrated into iD, so editors have the option to use whatever works and has coverage for the area.

FYI: OsmAnd+ has the ability to record GPX tracks and upload them to OSM. This is incredibly useful for creating accurate maps and add just satellite imagery offsets. As a mapper, it would really if a hiking trail has some GPS data so that the nodes can be aligned and improve the accuracy of the map.

https://osmand.net/docs/user/map/tracks-on-map#tracks

To err is human. Try to notice missing points of interest and add notes for things you’d like to have added to the map.

That’s a very good idea. My home town is using a janky list of nodes in a Google My Maps and it’s so frustrating to use. I added the routes to OSM and they updated their website to reference my work.

Preach

Great news! More integrations means more opportunities to improve the map. Thanks for sharing!

Hey there Coach, happy to see a fellow Ecosia user in the wild!
This map seems to be using Mapbox Streets for its’ style featuring vivid colors.

OSM has plenty of styles you can use. Here are some interesting ones that I found so far:
https://www.mapbox.com/gallery/
https://openmaptiles.org/styles/
https://maps.stamen.com/#watercolor/12/37.7706/-122.3782
Toner is my favorite of these, as well as Dark Matter for mapping in the dark.

Though using them depends if they are integrated using Mapbox as we are relying on the configuration of the applet to provide these styles.

Look at the list of ways and nodes on the left panel. They edited some features on one side of the map, and without commiting the changes, started editing somewhere really far away. Then both changes ended in a single changeset which tries to border around the edited features.

https://wiki.openstreetmap.org/wiki/Changeset

I would do a node with the following tags:
amenity = cafe
amenity = bar
opening_hours:bar = Mo-Fr 19:00-02:00
opening_hours:cafe = Mo-Fr 09:00-18:00

Read more here:
https://wiki.openstreetmap.org/wiki/Key:bar

Go Map!!!

There is also Comparison of iOS applications