A grind is a grind and some people like and others don’t. Either way, grinding a SINGLE activity for that long is a bit much. These weapons should be achievable across multiple activities. Strikes, Crucible, raids, gambit, EP, Forges, Reckoning, Menagerie. Basically anything that isn’t just patrolling and killing super easy enemies.
If it was like this people could actually play what they enjoy.