Are there people with a good amount of crypto but store it in wallets like electrum or similar ones?
Of course, there are such people, so although it is not recommended to use Electrum or any other desktop wallet as a hot wallet (for a good amount of coins), the degree of security depends on how much that person is aware of the dangers to which he/she may be exposed and whether he/she knows how to protect himself from them. Properly configured Electrum on a computer that is 100% virus/malware clean, and has adequate protection is not something that should be considered insecure, but why risk it that way if one hardware wallet costs only about $50?
If you look back a few posts, then you can see that Electrum can also be used as a cold storage (airgapped device), and a watch - only wallet (online device).