If it is a healthy green leaf (which means it is productive), it stays. You do what you want.
Do you prune fan leaves? Absolutely No. But bottom budsites that get little light and will take nutrients that would otherwise go to buds that get the most light? Absolutely. I don't want popcorn bud, I want big buds.
UB, I get what 1blazeking is saying. He removes budsites, but
not the fan leaves. I hope you don't need a photograph example to see what this means.
I do it too, but for personal reasons. I haven't seen scientific proof of "plant energy" or any of that, and I don't care whether I get more yield from pruning bottom budsites. I didn't get less yield when I did side-by-side clones from same mommy, with the only variable being pruned vs. unpruned.
My main reason is disability, severely limited mobility, including the use of my hands. I rarely have help in my nursery, so I have to make my gardening as physically manageable as possible. Trimming is extremely difficult and painful for me to do, so the less popcorn buds to trim the better.
I leave the fan leaves intact, removing only the stems growing from the same nodes as the fan leaves. Stem/shoot gone, leaf still there. I want all the photosynthesis I can get.
Of the 3-5 shoots I remove, I keep the most developed 2 for cloning. Of those two, the first to strongly root goes into my perpetually rotating cycle... a small scale SOG of 32-36 plants. This also frees my veg/clone area, as I don't need mothers; I keep one just in case I need it (I don't have seeds for her strain & can't afford to buy any for a while), and the rest of the space is roomy enough for all plants waiting to be put into the bloom area.
SOG enables me to take a large job (harvesting a bush for bours) and break it into small chores (harvesting one plant for half an hour every 2-3 days), which in turn enables more ability for me to walk and use my hands for other things even as simple as browsing web sites.
However, the fan leaves at the
same sites as the pruned shoots
remain, large and green and catching some rays along with the rest of the plant.
I do encourage others to keep as much as possible on their plants. If they ask me why I prune, I explain what I just did here, emphasizing that pruning works for me due to my limited abilities, but may not be what works best for them. For example, though I rarely top anymore, I do show others how to top (and my preference in topping is the same as yours) and explain what benefits they would obtain from topping and growing much fuller plants than I do.
My leaves stay green through to harvest, so pruning the corresponding shoots isn't killing them; doesn't appear to be weakening them at all. I have a few friends & relatives with whom I have shared my buds over the four years I have grown cannabis, and they all have noted improvement in quality, so pruning isn't hurting that, either. I consume a pretty decent amount daily (raw leaves & buds in my smoothies for great pain and inflammation relief, body lotion, vaping as needed for breakthrough pain), plus one friend for whom I provide is dying from cancer and requires about as much as I do... the only way I can produce enough reliably is to keep my work manageable, and that means SOG without having to deal with tiny buds. It is what works for me, and my plants do not suffer from it in the least.
Yet when someone I know asks me for growing tips, again, I suggest they grow fewer, larger plants than I do... unless they are physically limited like me and prefer smaller chores rather than large jobs.