Yes. A problem that was anticipated and FIXED on many psservers. And Blizzard chose to ignore the smart work done by the pserver people. Why?
The people making the decisions are the Blizzard development team. But Classic is an already complete product that does NOT require very much development at all.
What happens if we all stay on Classic and retail never regains a player base. What happens to the retail developers? Of course they are trying to sneakily sink classic. When something threatens your livelihood you subversively kill it.