It's a cliché and it's meaningless - it's not like you see "Made with hate" or "Made with indifference (but at least it covered my mortgage payments)".
We’ll consider to find something more meaningful than love for the footer message.
Both don't have Unicode emoticons.
Nothing wrong with:
"Made with ♡"
Awesome thing about advice and criticism - you can decide to ignore it.
Do "Made for the ♡ of (unicorn emoticon)" if it floats your boat.
This is a common signal for "I care about my [front-end] work."