The BIP-177 improvement proposal on Bitcoin wants to redefine the base unit of Bitcoin by replacing the "satoshi" (1 BTC = 100,000,000 satoshis) with a new unit called "bitcoin", equivalent to the old satoshi. 1 BTC would therefore become 100,000,000 bitcoins. Proponents claim that replacing amounts like 0.00000001 BTC with 1 bitcoin would make transactions more understandable for users.
Saifedean Ammous' Bitcoin Standard demonstrates step by step that Bitcoin is the sound and scarciest money. In the common language accessible to all, it says "There will never be more than 21,000,000 bitcoins in circulation".
With the new BIP-177 proposal, it looks like
"There will never be more than 2,100,000,000,000,000 bitcoins in circulation."
This renders the sound and scarciest money proposition meaningless.
For this reason, I am against BIP-177.