If one finds a tip not of use then there is option to give red signal, why to get it deleted.
If one has bad experience and is sharing it with others , may be to alert others what is an issue.
Some one may have bad experience with same great train , retiring room., Dormitory aur food plaza /restaurant, while
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more... there are many others rooting for the same.
In that particular post of ramdasrajan , it got deleted becoz that debate on tip took regional bashing tone bw kerala and karnataka regions, i guess