Can't speak for the TouchBar since I consider it to be a completely useless gadget and have consequently bought the 13" non-TouchBar model, but the USB-C ports are definitely a downer. Colleague comes over with a thumb drive with an important spreadsheet that I need to look at - need an adapter. I need to hook up my laptop to a projector or big screen TV during a meeting - need an adapter. I want connect my iPhone to my MacBook Pro to transfer a bunch of photos - need an adapter or a new cable. External hard drive for Time Machine backups - need an adapter, a new enclosure, or a new external hard drive. I could continue but you get the picture.
It's simply annoying that's all. Depending on how often you connect things to your MacBook it will get either mildly or massively annoying over time. For me, it's leaning towards mildly now because I have simply given up completely and don't feel like carrying around a second bag full of adapters everywhere I go.