Correct, promoting posts is too expensive for Minnows.
However, you won't gain much influence and Steem Power if you never promote, at some point (when you can afford SBD losses) you will have to start doing it if you want to reach "the next level".
I, for example, have over 1000 SBD, I can easily afford 20-30 SBD loses in trade for more followers, referrals and attention.
Now it's just grinding a couple of dollars at a time and focusing on improving and putting regular content out. Services like Steemfollowers or Steemthat have also been a great help.
But yes, buying votes is something that seems inevitable once you reach a certain level and still want to grow. Ain't getting on that trending page without dishing out some dough...
No way around it, they are parts of the system and you need to use them to compete at the top.
I like what you write buddy, it is that grind mindset that shines through your words.
Get that money.