As long as you put the private key password or seed phrase in a safe backup. Since I don't have a hardware wallet wallet even if I bought a Nano or Trezor, I only use Electrum.
It's not just about storing your private data appropriately, it's also about how it was generated in the first place. A malware-infected computer with Electrum installed as a hot wallet is less secure than an airgapped computer where Electrum is used as a cold wallet. It's the same software, but used differently and in different environments.
So far I can still used it without facing any problems. So sometimes I wonder about other Electrum users who complain because they say their account was hacked. But for me, it's proven and tested.
Just because you don't have problems today doesn't mean you won't have them in the future if you slip up and make a mistake. Your hot wallet holds the signing keys to your crypto and they can get stolen.
Saying I don't understand why some people complain about Electrum and losing their coins when it never happened to me is like saying you don't understand why some people complain they have health issues due to years of smoking when you have smoked for decades and nothing happened. Be glad that it didn't, but don't get too comfortable. Your coins only need to get stolen once.
