Do you happen to have a link that points to recorded weather data for the last century that puts numbers alongside your undoubted anecdotal experience? As noted in other comments, here in Transylvania I've seen no such thing. Indeed hot weather seems to have been in increasingly short supply over the past decade or so.

I can attest winters were definitely colder in the Moldavian part.

I remember two meters of snow, digging tunnels through it and such.

And I remember four distinct seasons. Now it's more like a long summer, a long autumn, and short spring and winter.

Personal anecdotes are worthless. no offense intended.

Is that a fact or an opinion?

Some areas are less affected than others. I grew up in Banat, where I definitely noticed that trend. Every winter came with snow to swim in and 40+ summers were rare, now it's the opposite.

Anecdotally here in Pretoria South Africa I used to play on the frost before school as a child. Today we never see frost in the winter mornings here anymore.