Question: Has the safety of the “old” Bitcoin address format been compromised in any way?

Hello, I have a concern based on semi-technical article I read on local (Czech) news site.

I have some Bitcoin in a cold storage address in the "old" format (starting with "1F…") that I have created in 2015. During the following 11 years, my BTC just sat there, with very few partial withdrawals (3 or 4 total). No "change address" was used, the remaining BTC are still in the same wallet. I do not intend to do anything with the remaining BTC in the near future, I just want them to sit there.

Unfortunately, during those 10 years, I was less active in the Bitcoin scene and did not closely watch the developments and happenings in the world of Bitcoin. I just want to hold the remaining BTC for several more years, I don't need them now.

My question is: Are my remaining BTC still reasonably safe in that old address or is there some truth to the rumor that "Old format BTC wallets are now at risk?"

P.S: Of course, my private key from that wallet is securely stored and I am aware of the importance of it not being leaked / lost. That's not what my question is about.