Johoreans are suffering because of Mahathir.

https://www.businesstimes.com.sg/government-economy/johor-businesses-suffering-from-drop-in-singapore-visitors-report

Malaysians must not think that there won't be any repercussion under Mahathir's leadership because he will bring more suffering to Malaysians.  Mahathir is well known to be anti-Singapore and anti-Chinese.  The Malacca gateway project is going to be a white elephant once it is completed because of Mahathir's policies.