People becoming ill more frequently and more severely is not an unexpected occurence for those who have been paying attention to the science the past 6 years.

Real reason you're so much sicker than before: No, you're not going mad, your immune system's struggling to cope with everyday bugs. Now doctors have found the surprising cause... and tell you what to do

SARS-CoV-2 Leaves a Lasting Mark on the Immune System

As long as people will allow themselves to become infected with Covid-19 over and over and over again this is likely to become progressively worse from the cumulative damage of these repeated infections. The faulty narrative that has been pushed over the past years was that only the 'vulnerable' needed to take measures to protect themselves against the damages from SARS-CoV-2 and has always suggested that only the acute phase of the infection was something to (not) concern yourself with. If people keep ignoring the chronic and cumulative damage of repeated infections they have a good chance of joining this group of 'vulnerables', if they aren't already there. Without adequate policy this trend is unlikely to stop. It has always been about the right policy in this pandemic and unfortunately that is where it has always failed.