> Since your bot is very popular and needs to send hundreds messages to users within a short time, the API limits on sending messages (
core.telegram.org/bots/faq#my-bot-is-hitting-limits-how-do-i-avoid-this) will be increased for it on an exceptional basis. The bot will always be able to reply to users’ recent messages, even in excess of the standard limit — so that everyone is able to smoothly use the bot as much as they like.
A potential downside is that its messages won’t be stored on Telegram servers for long to decrease the load on the servers. In practice, it only means that the bot won’t be able to forward messages that are older then approximately a week or use a ‘Reply’ function for messages that are older than approximately a week (your bot doesn’t seem to use this functionality anyway). It will only affect the bot and not its users: they have their own copy of the bot's messages and will always be able to see and forward any message of the bot as long as they want to.