Yes. The missions are large and varied, some mix in vehicles, vast open spaces, objectives, platforming, etc. Very few defensive stands and in general are very different than D1. I went into detail what playing a side mission was like,
here, as a point of contrast. It's a night and day difference in mission and encounter design, with about 4x the raw territory to cover.
This is objectively false. Every system in the game was overhauled. The article goes into detail, as did I.
Very similar, yes.
Destiny 1 endgame, post-campaign: Strike playlist, Nightfall strike, Heroic strike, raid, Iron Banner.
Destiny 2 endgagem, post-campaign: ~3 dozen Adventures with various mechanics, comparable to full missions in Destiny 1; 15 or so lost sectors; numerous exotic quests; several quests consisting of numerious missions across the destinations; Trials of the Nine; Iron Banner; Nightfall strike (with rotating, high-impact mechanics); Nightfall strike hard mode, raid.
The campaign is
much larger, missions are 2-3x longer each, and cover proportionally more territory.
There are around 40 single player missions, excluding quests, and before strikes (with matchmaking), and not including all the public events. I'm a few dozen hours in and am still working on quests, adventures and strikes (most of which I haven't seen yet).
Everyone is entitled to their opinion, but there are measureable facts you are referencing and your facts are objectively wrong. You can still come out no liking the game, of course. But your post isn't grounded in reality.