Welcome back to The TechCrunch Exchange, a weekly startups-and-markets newsletter. It’s broadly based on the daily column that appears on Extra Crunch, but free, and made for your weekend reading. Click here if you want it in your inbox every Saturday morning. Ready? Let’s talk money, startups and spicy IPO rumors. So much for a quiet start to the year. Any hopes of 2021 giving us respite from the turbulent waters of 2020 went splat, as the first week of the New Year was busy with venture capital deals (Divvy!…