Why criticize the visa-free entry for Chinese nationals in Jeju?

Lately, people have been making useless worries that Jeju is becoming "Sinicized" because there is so much Chinese signage in restaurants and souvenir shops.
However, considering all real estate and land in Jeju, the proportion of real estate owned by Chinese nationals is only 0.5%. It's not even 1%.
The other 0.5% is owned by Americans or Japanese.
And more than 90% of the real estate is domestically owned.
Also, the proportion of Chinese nationals visiting Jeju accounts for nearly 70% of all foreign visitors.
Of course, many more domestic travelers visit,
but businesses put up Chinese signs because Chinese tourists spend a lot of money in Jeju.
Let's not reduce our economic benefits by being uselessly anti-Chinese.
There are plenty of other things to be anti-Chinese about.
This is actually something we should be taking full advantage of.