This isn't a super great argument when Minnesota ended up relocating too, as did the Jets, and the Devils were constantly threatening an exit to Nashville before they got the Prudential Center (good riddance, I say
). The Islanders also nearly moved, and probably would have if it wasn't for their Cup wins, which the NHL is always hesitant to approve a move after. Hell, the Nordiques are always pretty up there for attendance, and they skipped town too.
This also obscures the fact that for every year after your chosen year, things were downhill: 4th worst in 88-89 and 89-90, 3rd worst in 90-91 and 91-92, 2nd worst in 92-93, 93-94, and 94-95, 3rd worst again in 95-96 and 96-97, and then off they went to Carolina. Valuation improved and they're basically the only game in town for Raleigh, so it was an easy media market to capture. Sandwiched between NY and Boston, Hartford was not able to stay afloat.