The argument is again and again that the value of Bitcoin will increase because supply is limited to 21 million. But this is quite simply wrong. Every time Bitcoin is forked that is in real terms an expansion of the Bitcoin currency beyond 21 million. To some degree the same is true of alternative crypto currencies which will flood the market. There is already more than 1000 cryptocurrencues (
https://en.wikipedia.org/wiki/List_of_cryptocurrencies )
Th forking (or absence of it) does not effect Bitcoin's supply. At best, you can consider it as a "gift" to all bitcoin holders, which will increase the overall worth. It in no way impacts the overall supply of 21 Mn, which is set in stone.
This is 100% true, FORKS are not affecting the number of bitcoin supplies, this was made to make free tokens for BTC holders.
But, the negative side of this is the group of people who made the FORK will get more coins as they manage it.
they are having much free money for the future.