Everyone has their problems. I used to be a mechanic for a series of fleet vehicles, big rig trucks, cranes etc.
Anyway we had about 50 trucks that I would service new / old. Ford, gm and dodge.
Ford would blow random fuses and relays, starters. Omg I replaced more Ford starters than anything else. We kept multiple in stock, in 4 months I could change a Ford starter out on the side of the road in about 20 mins. Transmissions were good if they were serviced regularly. Had a few shocks go. Plug wires would rot apart. Frames lasted the longest on fords it seemed, never had to weld one. New models; the airboxes squirrels like to nest in them lol.
Chevy were overall the least repaired but they had their issues. Door locks would stop, door hinges would sag, engines were very good for the most part, maf sensors sucked, o2 sensors would go a fair bit. Transmissions almost never lasted more than 300 000km even with proper service. Unless it was an Allison transmission like on the 2500hd. They could sail up till 600 000km no problem. 2500 HD GMC/Chevy was best build truck imo. Chevy also wasn't the greatest for pulling serious weight behind it.
Dodge pretty much everything to do with steering was a problem. Ball joints, tie rods, various bushings. New ones spit out steering racks like crazy (these could cost as much as a rebuilt gm tranny btw). The new models were notorious for making lane changes on the highway without moving steering wheel. Doors also sagged like the chevys. New models had some transmission programming issues the dealers had to resolve. Dodge could pull the most without breaking a sweat. Motors were decent, some would burn oil. Transmissions weren't bad usually. Cummins motors were awesome.
My point here is that they all have issues. If someone has a lot of complaints about one manufacturer vs the other. In my opinion they haven't owned or worked on enough cars. Everyone cuts corners, which corners would you prefer they cut? That's up to you... Research before you buy. Have realistic expectations when you buy. If you want a "perfect" vehicle look at Ferrari or Lamborghini
If I were buying a fleet of vehicles for heavy duty work they would be Chevy 2500 or 3500 cause they had the least amount of people left stranded on the side of the road (time is money right). For light duty, dodge vans. Those things literally go forever lol just be prepared for ball joints, tie rods and wheel bearings.