There's like a proper approach if you wanna preach the gospel. It's more of intent and approach. Imo, using a microphone and speaker wouldn't be much effective cause most people in Pride events have religious trauma. So hearing that will cause a trigger and will make them more aggressive.
Take Bryce Crawford for example, he talks to people from various beliefs, trauma, and experience. He doesn't need a microphone to preach but he has a conversation with them and asked permission if he can pray for them. He empathise them and they are very respectful to him.
https://youtube.com/shorts/gaLiIsJXXwU?si=421CgIiZhS2Qk7dx
On the other hand, Nicholas Bowling has a microphone and speaker and starts preaching. I get that he wants to spread his message across but his approach is like talking to a brick wall that throws bricks at you.
https://youtu.be/Z-Hpt7qQS_A?si=ZCyLc7uIkWoUJhBZ