There is always some community criticism of the levels of protection afforded by the seasonal flu vaccine, but the reality is it can never be more than a cocktail of “best guess” , based on estimates of likely circulating strains. But even at 50% protection, it’s better than nothing, and particularly so this year, as access to care for anyone with ‘just’ the flu might be more difficult ( and an ‘unnecessary’ flu will put all the more strain on healthcare systems under pressure).
So I hope everyone will take up the option of seasonal flu vaccine ( in Australia, free for over 65s, and very cheap for everyone else).
It would be terrible ( not to mention awfully bad luck) to end up getting Covid-19 and seasonal flu concurrently.