I wouldn't worry about it too much. Does any organic traffic actually land at that site? Not really. Does it have posts by Satoshi, Hal, Vitalik & other crypto-luminaries of our time? No. Does it have 12 years worth of content & backlinks? No.
Here's a quick comparison of the site's traffic metrics according to Similarweb:
Bitcointalk Global Rank: #39,778 Worldwide
Altcoinstalks Global Rank: #540,599 Worldwide
Bitcointalk Monthly Visits: 1.5 million
Altcoinstalks Monthly Visits: 45.4 thousand
Bitcointalk Traffic Sources: 42.54% Search
Altcoinstalks Traffic Sources: 10.45% Search
I assume the campaigns there are paying peanuts compared to here. Also, its got to be a complete spamfest, which is why its not attracting organic traffic.