You've mixed things up there ETFbitcoin.
The address 1111111111111111111114oLvT2
is spendable. This address is generated from a RIPEMD-160 output of 0000000000000000000000000000000000000000. If you put 0000000000000000000000000000000000000000 in
to step 3 on this page, it will output the address 1111111111111111111114oLvT2. So, if someone could find the private key which generates the public key which results in the RIPEMD160(SHA256(pubkey)) being 0000000000000000000000000000000000000000, they
could spend those coins. It's very unlikely, yes, but the coins are still spendable.
The quote of mine you have linked to above was discussing this "address":
https://blockchair.com/bitcoin/address/s-272edf45031dd498e7b3ae89e11ff21b. If you click "Additional info" and then "Op" on the left, you will see the locking script is as follows
OP_DUP OP_HASH160 0 OP_EQUALVERIFY OP_CHECKSIG
To be able to spend these coins, someone would need to find the private key which generates the public key which results in the RIPEMD160(SHA256(pubkey)) being 0. Because RIPEMD-160 always outputs a 20 byte number, it will
never output 0, and so
these coins are provably unspendable.