Seems so. I used my Yubikeys the same way as you did (using an old laptop which was wiped), not only to have a backup copy but because with well known software

Seems so. I used my Yubikeys the same way as you did (using an old laptop which was wiped), not only to have a backup copy but because with well known software it is less likely to be problematic than some embedded chip developed on a budget somewhere. It was my impression at the time that this was best practice for setting up Yubikeys for personal use.