Uptime Monitor causing CPU spike?

We are currently in development phase, and on a day with quite low traffic (~6 visitors according to Google Analytics) in which we were not doing any active development or accessing our page, we experienced a significant CPU-usage spike that triggered autoscaling of our Cloud VPS with SiteGround. In the process of troubleshooting this strange spike with our host, the support staff monitored our page usage stats for awhile and noted that "[our] home page has quite a lot self-referential scripts" and that "there are significant number of hits from couple of uptime bots." They went on to say: "Please note that those [uptime bots] would also spawn processes and will be using the server's resources, which may have triggered the auto-scale as well."

This is what they listed to imply uptime bots may have played a role in triggering the auto-scale:

=== Top 10 IP Addresses ==========================================================================================================
Hits IP Address UserAgent
---- -------------- ------------------------------------------------------------------------------------------------------------
341 104.236.50.140 WPMUDEV Uptime Monitor 3.0 (https://premium.wpmudev.org)
218 104.236.238.22 WPMUDEV Uptime Monitor 3.0 (https://premium.wpmudev.org)
121 37.60.239.33 WordPress/4.5.1; http://weathertiger.com
11 66.249.69.107 Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
6 66.249.69.115 Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
5 66.249.69.99 Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)

Could these uptime bots really have caused such a drastic CPU usage spike? I also contacted our theme developer (we use MH Newsdesk) to ask about the self-referential scripts too (although if anyone here has any insight about that, I'm all ears -- I really don't know what they mean by this).

I'm not very satisfied with this answer, but I'm not sure how to respond. I don't feel like I have deep enough understanding to evaluate if either of these claims (uptime bots or self-referential scripts) could actually be responsible for the usage spike. I'm not necessarily against scaling the CPU, I'm just surprised we already needed it, and it worries me that if we're already triggering autoscales before launching our business, we won't be able to handle any external traffic.