Yep, advertiser don't care how they got those clicks. They just want the numbers to go up so they feel like their "investment" is doing something. Tricking people into thinking it's user content, showing half naked girls for a dumb mobile gambling game, showing fake products... they don't care. Advertisers only have one thought: "Hurr Durr Numbers Go Brr"
"Lockup" is an investment term. When a company has an IPO (Initial Public Offering, which is the day they become publically available for stock trades), the big shareholders and company employees who are invested ahead of the IPO are "locked" from selling their shares for a certain number of days. This isn't required, but most companies having an IPO end up having a lockup period set as well.
In regards to this headline, it just means that the initial investors and big shareholders are now free to sell their shares, which they are apparently doing in droves!