As hated as "Former Yugoslav Republic of Macedonia" was, "North Macedonia" is not an improvement. Greece has never liked the idea of an independent Macedonia because it'll get Greek Macedonians up in arms to maybe want to join them.

I went through FYRM a few years back and one thing you notice as you travel from the east to the west along the highway is the very sharp dividing line between the Christian east and the Muslim western half of the country. Western Macedonia is very much under the thumb of Albania. The name change won't do anything to deal with that situation.

Three decades on, Greece, Macedonia sign pact to change ex-Yugoslav republic's name

PRESPES, Greece/ BITOLA, Macedonia (Reuters) - Greece and Macedonia defied protests and set aside three decades of dispute on Sunday as they agreed on a new name for the Balkan state, potentially paving the way for Macedonia’s admission to the European Union and NATO.

The foreign ministers of Greece and Macedonia signed an accord to rename the former Yugoslav republic the “Republic of North Macedonia,” despite a storm of protest over a deal seen as a national sellout by some on both sides.

In the idyllic setting of Prespes, a lake region that borders Greece, Macedonia and Albania, officials from the two countries embraced, shook hands and penned a deal in the presence of European and United Nations officials.

The agreement still requires the approval of both parliaments and a referendum in Macedonia. That approval is far from assured, as it faces stiff opposition from the Greek public, and Macedonia’s president has vowed to block the deal.

https://www.reuters.com/article/us-greece-macedonia-name-pms/three-decades-on-greece-macedonia-sign-pact-to-change-ex-yugoslav-republics-name-idUSKBN1JD06D