These alts are an attack on bitcoin, and yes shit coins like doge can do damage to bitcoin. Bitcoin could end up being like the story of the elephant being attacked by ants. The elephant may kill thousands of them, but eventually those little bastards could bring the elephant down.
I don't think doge is directly or even indirectly doing any damage to bitcoin (or any other altcoin for that matter.)
Where's that story about the elephant and the ants? I know some elephants avoid plants that have ants, but they don't bring down the elephants.
I think that's a good fair point I hadn't considered before really. Many of these coins with small to mid "market caps" on cmc are probably worth a fraction of the reported value. I don't think it necessarily applies to the larger cap coins though. If you remove the "other" from the chart it's still a fairly major chunk of dominance that has shifted.
The whole thing is just stupid. I could create a shitcoin today with a trillion coins (which I pre-mine 99.99% of them), wash trade one coin on an exchange for $1, and voilà my shitcoin has a $1T market cap and be #1 on the cmc listing.
You need to do a little more elbow grease to get it actually listed on CMC. But yeah, it's possible.