These randomly generated addresses are not unrealistic. These generated addresses have the many extra factors like Road title, town, or zip code, which can be necessary portions of a household address. By default Electrum now creates SegWit wallets with bech32 addresses. For legacy address you need to generate older seed https://elliottawsok.blogdigy.com/what-is-a-rarity-address-no-further-a-mystery-40804428