Yes, as long as we mind nature, not leaving trash, speaking at a normal level.
I disagree with the statement that implies uncertainty about who is responsible for trashing the reserves. In my opinion, based on personal experience, Visitors amateur naturalists, who are often synonymous with the picnickers in the Sundarbans (obviously not all of them), are primarily responsible for increasing almost all types of pollutions. In Sundarbans, I’d estimate that at least 90% of the trash is caused by these individuals, who often are not aware of nature conservation and prioritize their luxuries and interests over conservation.
Sundarbans’ unique context means that dog walkers are not a concern. Local villagers may play a minor role, often motivated by Visitors/amateur enthusiasts. Those who do the Forest (Forest fishers, Wood Collectors, Crab Catchers, honey collectors, Poachers) facing significant risks of being vulnerable to Crocodiles, tigers, snakes and other predators, have a relatively negligible impact on the environment.
It’s essential to acknowledge the harm caused by amateur naturalists and take steps to mitigate their impact, rather than downplaying the issue with uncertain language.