The Flight III Arleigh Burke destroyers have more modern electronics and radar and not that much smaller in terms of magazine capacity.
Sure, it's really not a big deal. Burke III > Tico in most respects. USN will lose some numbers in the transition, but not many, and they could probably stand to lose a few anyway, with the inventory being so top-heavy.
But it's a big deal for the American public commentary scene. You have USN consistently pushing to retire ships "early" while simultaneously putting out papers calling for ever greater numbers of ships, Congress consistently opposing said retirements, while semi-informed commentators and interested laypersons fret about the loss of the mighty "cruisers", the rise of China, and the travails of the LCS/Zumwalt/CG(X) programs. Throw in some partisan politics and anti-woke sentiment and between all that there are an awful lot of bad takes on the cruiser retirements floating around, which is all very entertaining.