What are the chances of accidentally sending satoshis to an incorrect (but in use) BTC address, if a single character is mistyped in a Bech32 (SegWit) address?
I'm not sure about Bech32, but for legacy Bitcoin addresses, there's a
1 in 4 billion chance of creating a valid address by making a typo.
Actually the chances are very thin based on the fact that most times we use copy and paste or just scan the QR code.
The chance of losing Bitcoin because of a typo is tiny compared to the chance of losing your Bitcoin because of
clipboard malware. Verify the address before sending.