Recency matters because a Saskatchewan Real Estate Commission licensee's business can shift quickly. A profile full of reviews from years ago says little about how an agent is handling today's market, so check the dates before weighing the total.
Detail is the other signal worth reading for. A review that names the neighbourhood, the type of sale and what the agent actually did is worth more than a one-line rating, because it is much harder to fake than a star average.
Joel Dyck's Google profile currently shows 72 reviews at a 5.0 rating, and the same test applies to it: read a handful for specifics rather than judging on the number alone. Get your hand-reviewed valuation from Joel Dyck.