“Some maintain (albeit we don’t pasken like them) that you would need delasos for every pirtzah greater than ten tefachim wide ”
If i recall… The Tosfos haRosh clearly states that a pirtzah greater than ten is only a rabanon. Hence, the above mentioned achronim did not see the tosfos harosh, as it was only recently discovered, one may say had they seen… they may have agreed..