Why does the bot reply to any message?

Question

JavaScript

Here I have the code:

const {VK, MessageContext} = require('vk-io')
const {HearManager} = require ('@vk-io/hear')
const vk = new VK({
  token: "СЕКРЕТ"
})
const hearManager = new HearManager()

vk.updates.on("message_new", hearManager.middleware)

hearManager.hear(/бот/i, async (context) => {
  await context.reply("✅ На месте!")
})

vk.updates.start()
console.log("Started")

The bot should only respond to the "bot" message.

I write to the bot "DyaLla" and he replies "✅ On the spot!",
Why is that?