There are few reasons for this case. At first, it's because of downward trend which made price of BTC fell a lot that why number of BTC signature campaign decreased as well. Beside, Moderators often care about Bitcoin sections more than Altcoin sections that why spammers, shitposters often choose Altcoin sections to spam to get money from bounty campaign which they're being in.
Well when you think of giant profits from altcoin, definitely you need time. Though they are soft to pockets but they yield very low. Bitcoin on other hand has its own pros and cons and one biggest cone is its expensive to buy. Even, opportunist are here that never turn any stone to kick it for their own benefits. Not a year, but dont try to sell coins now, wait for time to let it reap to crest of price range.