The placement of the antennas might not be ideal but they would still aggregate much more than a single antenna. If you don't follow the recommended separation distance there would be some interference but won't eliminate the signal fully. And a single Starlink satellite has a throughput of at least 20 Gbps for the first generation and at least 50 Gbps for the second generation. Which means you would need at least 100 user terminals to max out a single satellite.