your Bitcoin will travel into the future all by itself, and will be there waiting for you
I wouldn't be so sure about that.
1. Your current coins would be protected with OP_CHECKSIG, wrapped in that way or another, under any address type in use. It
can be unspendable, when "quantum secure" things will be introduced.
2. The amount of your UTXOs could be around the dust limit, and
could be discarded by new versions of "more pruned" nodes, which would be "spam resistant". And then, you would not only need your seed, but also your previous transaction, to spend them in the future.
3. You don't know, how the future would look like. After travelling, you may have no way to go back to the past, and you may be disappointed, if the future will be different, than you imagine (for example: Bitcoin can be illegal, or
require restrictive KYC).
Edit: If you travel to the future, your existence may be erased from the present. And then, I'm not sure, in what kind of future you will land, and how you will pass future KYC rules:
