I wanted to wait until the last two tasks were released before making a judgement, but since Bearnard and Buli each had only 60/70 points per task, I'm a bit worried about the time needed to reach the highest tier.

Yes, not everyone should reach the highest tier and there should be a fair amount of dedication needed to get there. If people have real-life obligations, sometimes there is a 'sacrifice' involved! In most of the virtual pet sites I've been on, players who have full-time jobs and other real-life obligations generally don't 'reach the highest tier' or even a high tier at all in time-consuming events like these, which makes sense - that's just life. However, it feels as though many of the players who don't have real-life obligations may not reach the highest tier despite continuously checking in for around 12-15 hours/day.

Using some of Krycelli's calculations in a previous post, if the next two tasks award 80/90 points each (instead of the current highest at 70) with similar cooldowns to Bearnard/Buli, the maximum number of points one could reach would be 42.9k, which means that to get 30k, someone would need to check-in for roughly 70% of the event. That would mean not missing a single task while you're awake and getting a bit under 8 hours of sleep/day throughout the duration of the event. I feel as though that would be a bit ridiculous to expect from players who want to reach the highest tier, given the immense amount of dedication that it already takes to continuously complete tasks for 12-15 hours a day. Hopefully, this does not become the case and there will be more points or shorter timers in the future.