Okay I'm going to go back to my original post with footnotes for the reader because people are getting lost in their own invented sidetracks.
Common practice is not it. But given the nature of e.g. powerplay combat zones, doing them in PG to earn incomprehensibly large amounts of merits
Too large to be easily explainable as "some keen pilots who went a bit overboard", in an eminently exploitable PvE mechanic - not casual solo guy Darrack amusing himself with some mates hauling.
is as close to an admission of botting as you're going to get. Because no-one is going to admit it. The problem is not even whether you did or not, but the inability for anyone to know either way, in the knowledge that botting is a thing, has happened before, some people will go low to win, and given a lack of confidence in FDev's ability or interest in tackling it.
The issue is trust - if people can easily become convinced a feature (PowerPlay here) isn't reflecting merit and effort, then they'll abandon it. Currently, the burden is on sides that don't get along, to trust each other to not use exploits. Believe me, if you go to PG and come back with a million merits, I'm going to be questioning where tf they came from. That's not a me thing.
Look at it this way - would you do your great fun hauling in solo if you were 50/50 that I might just press a button and cancel all efforts of you and your group? As someone who won't go to open because you know someone somewhere one day will exploit the weakness of your ship to undo some game progress, I suspect not.
You haul all week to fortify. I "press a button" to wipe all that effort out. Would you carry on every week? It's hypothetical to get you to see where I'm coming from. Given pad blockers are too much sacrifice for you, I'm guessing not.
If you want people to engage in a competitive feature, they need assurance that their success or failure depends on merit of the two sides, expressed via broadly sensible gameplay mechanics. I am absolutely certain that the combination of available exploits AND PG/solo to hide their use works against that.
You can do shady stuff to a game-breaking extent without anyone ever knowing. For me - I damn well want people to know that I'm doing things the right and fair way. The only way is for me to be in open, and for my enemies to be confident of that fact.