I actually find this kind of exhibitionism quite vulgar in a way and attention-seeking. Do as you please behind closed doors but when you boast in this manner in public, you are going to be discussed and likely judged.
I loathe the fb pics every year of 'look how much I've bought my child/what a good mum I am'.
DSD's mum does this-thousands of pounds worth of stuff, pictures on social media of the 4/5 huge piles of presents for her princess. DSD takes two days to open them and gets bored very quickly.
We have maybe 25 presents for each child, things they can use and have asked for. And will enjoy and value. Quality not quantity!
But hey, everyones different I guess. If it makes her happy, then Merry Christmas!
I suspect the old adage applies here: Your children need your PRESENCE, not presents.