I have been rather surprised by that.
I'm not sure why it's a surprise. The media going on about how doing fun things will require a 'vaccine passport' (whether these are realistic or not), companies like Saga suddenly advertising cruises for those who have had a vaccine, media talking about foreign holidays probably going to require vaccine passports.
All those things are completely fine to feel envious about if say you're in your 30s, in a job where you are 'key' (but not key enough to be considered critical enough for a vaccine), and have been out at work throughout in potentially risky situations. Your kids have been out at school the whole time too... and you aren't going to get a vaccine any time soon.
You'd be totally justified in feeling envious of a speech therapist who hasn't left the house since last March getting a vaccine, or a social worker who has been working from home since last March getting a vaccine, or a SAHM who happens to be married to a GP getting a 'left over' vaccine, or NHS admin staff who WFH getting vaccines.
Doesn't mean you don't understand that the more people that have it, the better, it just means that these folk, some who are arguably less deserving that you, are going to be off having 'fun' before you are. Even though you've been working throughout.