English is a Germanic language. (Yes, there's other stuff mixed in, but the root is Germanic.) There is a natural tendency for the main verb to go in second position. However, second position does
not necessarily mean second (full stop) because of phrase groupings. Your own sentences give good examples. I've put parens to group things and second position is in italics:
> (A judicious use of commas) helps ...
> (the most general pattern) seems...
(I think that the initial adverbial 'Yet' doesn't count for purposes of verb position, but I may be wrong about that. It's been a bit for me...)
The thing is that the sentence you quote as a bad example (and it is bad, and should be edited) feels natural, because it follows that rule:
> (The car driven past the barn) crashed.
There aren't multiple clauses at the front. There is a single (overpacked) noun phrase.
I'm not excusing bad writing, but the patterns that underlie your own language can trip you up in surprising ways.