Yeah, that's what puts me off from it. I play 3-6 times per week, doing the daily heroic story, some level 24 strikes and the odd patrol or two. I just hit level 26 this week, and completed the weekly heroic strike for the first time (solo). I have 12 coins.
To follow the advice, I'd need another month or so to level another character to the same, and really increase my play time per week to do the weekly heroic strikes. The strike was fun until the boss, but as usual was a slog for the boss itself which I had to cheese in order to beat solo. I think I just have a different bar for what is easy.
I basically want to play the activities in the game in moderation and slowly get the appropriate rewards needed to level. That means I level very, very slowly. All of the advise I've read to level faster feels like work (farming hajilllions of helium filaments, leveling dual characters, etc.). The second it feels like work, the fun stops cold and I stop playing.
Farming, juggling multiple characters, repeated runs on heroic strikes...I just don't think these are reasonable asks in order to level a character. I'm not a hardcore player of this game, I just hop on for an hour or so a few times a week. Upcoming changes like the resource economies (if that means what I think it means), moderate nerfs to strike boss health, etc. will make leveling via normal play a lot more reasonable.