No, gentle parenting and permissive parenting are often conflated incorrectly.
Gentle parenting still involves boundaries, often very firm ones. But it also involves acknowledging children's feelings, listening to them, very very very occasionally changing the way things are done based on their perspective, and trying to lead by example.
We say no. The difference is when the kids ask why, we don't say 'because y is a crooked letter', we give the reason behind the 'no'. They won't always accept /like the reason, but it is given, and the 'no' remains.
Example, ds hated brushing his teeth as a toddler and tried to refuse. I told him his teeth would go rotten, would be sore, showed him rotten children's teeth on Google (the explanation). He still refused (not accepting the explanation). So I pinned him down (gently) and brushed then for him (the 'no' still stands. The next time he had a choice, he can brush his teeth or I will - the boundary stands but the power is back in dcs hands