This seems like a weak argument since compromise may be more difficult, but it certainly isn't impossible when conversations are transparent. Eventually the "losers" of a compromise are going to learn about how their elected officials voted and what the impact of that vote will be for them, and they'll hold their elected officials accountable for it regardless.
It just isn't worth forcing every person to give up the ability to protect themselves by recording their everyday conversations just so that politicians can lie to the public and their donors while screwing over the people behind closed doors.