Yeah, the "Sponge stalking Squid" thing began in Good Neighbors and it became a regular thing in the series ever since. Examples of this include Breath of Fresh Squidward where he uses the sunrise as an excuse to watch Squid sleep and in House Fancy, Sponge says he's been stalking Squid for I think an entire day. I think this terrible element also started the whole "Sponge Has the Hots for Squid" thing that's been happening lately, which means Hillenberg's words about Sponge being asexual would be null and void at this point, not to mention all the controversy that comes with this.
Back on subject, Squid used to be hard on Sponge, but now he's too easy on him. If this weren't a kid's show, Squid would have bought a gun by now.