Do you know what RCS all provides? because it provides a LOT of great features. I mean the biggest one is 105MB file sizes. I guess you can stick with your carrier limited MMS, which is usually set to 300KB. Or maybe you can pay for Discord Nitro to send more than 8MB files? How about Snapchat which is limited to 60 seconds video files? Perhaps Telegram, that limits your upload speed to a snail pace unless you buy Telegram Premium?