It can happen because the gap between people who find Shukla positive and Asim positive or negative is not that big.
Sallu doesn’t like Paras, Mahira and Vishal so he may do something to hint to Shukla that get a grip.
Or he may just agree to everything Shukla has done who knows Paras and all might also get pat on the back. If they really want Rashami to be the villain they better evict her soon as she is not the chosen one and btw she is gaining support as well, sympathy toh mil rahi hai usse.