That’s not true at all in practice. If it were then we’d be seeing 2x as many transactions confirming after SegWit went live (we’re not).
Which tells me people don't actually care enough, or they'd be doing that.
Which makes me wonder about the validity of the majority of the complaints.
Currencies actually get used for transactions...
EDIT: it's Friday, be nicer me
Note that upgrading your own wallet to SegWit immediately saves you about 50% on mining fees, regardless of whether other network participants upgraded or not.