“Bitcoin is not a good idea.” – Central Banks

“Bitcoin is not a good idea.” – Central Banks.
“E-Mail is not a good idea.” – Post Offices.
“The internet is not a good idea.” – Magazines.
“Amazon is not a good idea.” – Sears Roebuck.
“Television is not a good idea.” – Radio Stations

No need to say more…

others added:
“Netflix and YouTube is not a good idea.” – Television
“Spotify is not a good idea.” – Radio Stations
“AI is not a good idea.” – Lawyers
“Agriculture is not a good idea” – Hunters 20,000 years BC