Carp said his message was “gaining momentum quickly” – with some images going viral on TikTok – though he added the council was quick to take the signs down.
He said he hoped the signs could help shift public opinion in favour of making the city more vibrant and fun, though he said there were some who would push back against this.
He suggested a “big difference” could be made if more nightlife for young people was brought to Chichester, plus bringing back the ice rink and creating more children’s play areas.
Chichester District Council told the it was investing £814,000 in refurbishments to several play areas in Chichester.
“Families and young people are a really important part of our community,” the spokesperson said.
The local authority added it had created a dedicated evening and night-time working group, which was collecting views on what young people would like to see in the city in the future.
“I feel like I’m contributing to making the city a better place for everyone,” said Carp.
“Whether it’s a smile, a conversation, or just getting people to think about the issues in a new way, I think the impact justifies the effort.”