Lockdown is not the easiest and most effective way of preventing spread - except amongst those who are able to work from home, and who are comfortable at home, and whose dependents can be catered for easily under lockdown. This largely cashes out as “wealthy, older professional people.” I’ve no idea how Deej thinks scientists etc are benefiting from lockdown but it’s probably fair to say that many of them are in the class least affected by it, and best served. For most people lockdown is not easy, and is not effective. Because they’re out there working, in unsafe conditions, to keep the rest of us comfortable, or have lost work and/or money, or have needs that are difficult to meet under lockdown.
Re vaccines: they are all very effective, against all known vaccines, for nearly everyone. This does need to be acknowledged, even if we also have to acknowledge that they’re not magic.