To be clear, Venera 7 landed on Venus and transmitted data in 1970. We did have robots (probes, landers) that while crude by today's standards, did serve a scientific purpose.
1969 space technology was the result of a mandate to get humans on the moon. A mandate to get robots on the moon would have likely radically increased the ability of these robots to collect data as compared to what Venera accomplished.
I'm still +1 for human exploration.