“He didn't want to go too vait into the zaitike sugya, since Tosfos only brought it down as a raya to be mechazek his ikar chidush.” (Weiser)

"The maharit you quote is completely סותר a different teshuva in maharit and what he writes in the Teshuva you are quoting is so vait that R Moshe says it was a talmid “טועה ומטעה” who wrote that teshuva." (source)