Shill has primarily been used as an insult for the past 50 years in the way I’m defining it here. I don’t believe you’ve never heard it used to mean that.
one who acts as a decoy (as for a pitchman or gambler)
Literally on that same page.
a person who poses as a customer in order to decoy others into participating, as at a gambling house, auction, confidence game, etc.
https://www.dictionary.com/browse/shill
a person who publicizes or praises something or someone for reasons of self-interest, personal profit, or friendship or loyalty
https://www.dictionary.com/browse/shill
someone who helps another person to persuade people to buy something, especially by pretending to be a satisfied customer
https://dictionary.cambridge.org/us/dictionary/english/shill?q=shill
shill n informal, US (person planted to lure customers)
https://www.wordreference.com/es/translation.asp?tranword=shill
A shill, also called a plant or a stooge, is a person who publicly helps or gives credibility to a person or organization without disclosing that they have a close relationship with said person or organization, or have been paid to do so.
Like A Dragon: Infinite Wealth. Picked up the previous game on sale and really liked it. This game is a major improvement on combat but a step backwards everywhere else IMO.
(Spoilers?) You play half the game as Kasuga, the main character of the last game. The other half, you’re the main character of some of the older Yakuza games. I do not like this. I get in the groove with one party right as it forced me to the other for the next chapter.
Also, a ton of the side quests for the other char are “remember this from the old games??”