I think you are creating a straw man here. No one suggested Sweden had no restrictions. The difference was that many of Sweden’s Covid response was based on the assumption that the general population could make its own decisions based on transparency of information and recommendations from the government. Compliance for such measures may be higher in a democracy if voluntary rather than through government mandated.
The question is what can be learned before the next great pandemic. Sweden, China, Norway, the USA, etc differed in some aspects to their response to Covid. Now is the time to evaluate what worked and what didn’t, as well as to assess the human and economic costs of shutdowns and prolonged school closures.
Note that the title of this thread is that Sweden was right about Covid. This includes their promotion of vaccines. Another straw man?
The evidence presented in the OP is that loss of life in Sweden during the pandemic was not significantly different from loss of life in neighboring countries. Another straw man?
Why do you suppose Covid variants that were once prominent disappear? Herd immunity. The population through infection or vaccination becomes sufficiently resistant to the variant that it goes away. Herd immunity is what selects for new viral variants that can evade the immune response. Fortunately, each new variant appears to have reduced severity of symptoms.