I did a little sort of experiment a few years ago -- pruned and pinched tomatoes on one row and left the others go except for really weak suckers, which I removed. I got far more tomatoes from the plants that were allowed to go wild, and the fruit was not appreciably smaller than the pruned tomatoes and there were many, many more of them.
My tomatoes get tied to a rebar stake in an effort to keep them somewhat in check, but other than that they receive minimal pruning. I get tomatoes by the wheelbarrow full. That is the story for my area because I have a growing season of 8 months or so. In a shorter season, you may want to concentrate on a few less slightly larger fruit.
I don’t prune at all, and I don’t pinch suckers...I have a relatively short season here in PRNH (New England)...I grow ALL tomatoes in containers...all plants (150-200...kind of lost count) are LOADED...best-tasting Goose Creeks ever...Kosovos the size of softballs...Ovita and Orange Oxheart plants so big I can’t get thru the aisles to water them...beautiful Indigo Rose tomatoes everywhere...so many tomatoes on ‘dwarf plants’ that I had to stake them due to the weight of the fruit.