Today, 3 Israeli hostages were released: a young female soldier - Agam (a 'spotter', not an armed combatant), a civilian woman - Arbel, and an elderly man - Gadi Mozes. There were also 5 Thai hostages released in a separately negotiated deal.
Similar to what the other young female soldiers had to go through at their release, Agam had to stand on a public stage surrounded by masked and armed men, and smile and wave to a crowd as part of a 'celebration' style event. Forcing young women to do that is bad enough, but to make a young woman do that alone is even worse.
Arbel and Gadi were brought through crowds of chaotic and intimidating men, with the scenes looking seconds from crushing them. They must have been terrified and there was a real chance the people 'in charge' could have lost control and ended up with the innocent hostages getting injured or worse. It was unsafe and will have been very traumatising. There are pictures and videos online now.
In response, the release of Palestinian prisoners was halted, although subsequently resumed after Israel was able to get some assurances that today's events won't be repeated. Some of the Palestinians released today have been very serious convicted criminals, but others have not been, including some who had never been convicted of a crime and at least two 15 year olds.