The Remnant began as a spit-off from the Wanderer, same family, more opposed to Vatican II. There is just too much competition for funds nowadays, as several other organizations have sprung up, all focusing on the Catholic Church, but not in any way under the Magisterium.
It used to be the Remnant could get donations and subscribers by opposing abuses in parishes; then they had to attack bishops to get attention; then when lots of others were attacking bishops, they had to attack mysterious powerful officials in the Vatican; now, the standard protocol is to attack Pope Francis. But now others are doing that too.
Based on my reading of the Remnant, I can’t imagine anyone become Catholic as a result of reading it. If you had to divide Catholic publications into 2 groups - “those who try to spread the Catholic Church” - and - “those who stand outside, and critique it” - The Remnant would be in that second group. They have lots of company now.