Dude, I've been complaining about this for weeks now... not just "Topic Popular", but also "Topic U.S." and other "topics"... and I'm sick of always having to remove the excessive "mightyfilm liked 2 videos", "Noah Ginex subscribed to 1 channel", "PinkLaffs commented on 5 videos", as well... then again, I'm sick of always having to click on "My Subscriptions" so I can be redirected to my subscriptions. YT actually fixed it ONCE earlier in the year where you only had to click "My Subscriptions" once, and anytime you went back to the homepage, there were subscriptions, and that only lasted for like a week or so, then they broke it again, and it's been that way ever since.